package com.cloudcc.mobile.view.crop;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;

/*
 * Modified from original in AOSP.
 */
abstract class MonitoredActivity extends Activity {

	private final ArrayList<LifeCycleListener> listeners = new ArrayList<LifeCycleListener>();

	public static interface LifeCycleListener {
		public void onActivityCreated(MonitoredActivity activity);

		public void onActivityDestroyed(MonitoredActivity activity);

		public void onActivityStarted(MonitoredActivity activity);

		public void onActivityStopped(MonitoredActivity activity);
	}

	public static class LifeCycleAdapter implements LifeCycleListener {
		public void onActivityCreated(MonitoredActivity activity) {
		}

		public void onActivityDestroyed(MonitoredActivity activity) {
		}

		public void onActivityStarted(MonitoredActivity activity) {
		}

		public void onActivityStopped(MonitoredActivity activity) {
		}
	}

	public void addLifeCycleListener(LifeCycleListener listener) {
		if (listeners.contains(listener))
			return;
		listeners.add(listener);
	}

	public void removeLifeCycleListener(LifeCycleListener listener) {
		listeners.remove(listener);
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		for (LifeCycleListener listener : listeners) {
			listener.onActivityCreated(this);
		}
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		for (LifeCycleListener listener : listeners) {
			listener.onActivityDestroyed(this);
		}
	}

	@Override
	protected void onStart() {
		super.onStart();
		for (LifeCycleListener listener : listeners) {
			listener.onActivityStarted(this);
		}
	}

	@Override
	protected void onStop() {
		super.onStop();
		for (LifeCycleListener listener : listeners) {
			listener.onActivityStopped(this);
		}
	}

}
